|commands| Fix incorrect typings of :meth:`InvokableApplicationCommand.add_check <.ext.commands.InvokableApplicationCommand.add_check>`, :meth:`InvokableApplicationCommand.remove_check <.ext.commands.InvokableApplicationCommand.remove_check>`, :meth:`Bot.add_app_command_check <.ext.commands.Bot.add_app_command_check>` and :meth:`Bot.remove_app_command_check <.ext.commands.Bot.remove_app_command_check>`.
